145 lines
4.5 KiB
C++
145 lines
4.5 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2012 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "shrpx_thread_event_receiver.h"
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#include <unistd.h>
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#include "shrpx_ssl.h"
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#include "shrpx_log.h"
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#include "shrpx_client_handler.h"
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#include "shrpx_http2_session.h"
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#include "shrpx_worker.h"
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#include "shrpx_worker_config.h"
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#include "util.h"
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using namespace nghttp2;
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namespace shrpx {
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ThreadEventReceiver::ThreadEventReceiver(event_base *evbase,
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SSL_CTX *ssl_ctx,
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Http2Session *http2session,
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ConnectBlocker *http1_connect_blocker)
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: evbase_(evbase),
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ssl_ctx_(ssl_ctx),
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http2session_(http2session),
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http1_connect_blocker_(http1_connect_blocker),
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rate_limit_group_(bufferevent_rate_limit_group_new
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(evbase_, get_config()->worker_rate_limit_cfg)),
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worker_stat_(util::make_unique<WorkerStat>())
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{}
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ThreadEventReceiver::~ThreadEventReceiver()
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{
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bufferevent_rate_limit_group_free(rate_limit_group_);
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}
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void ThreadEventReceiver::on_read(bufferevent *bev)
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{
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auto input = bufferevent_get_input(bev);
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while(evbuffer_get_length(input) >= sizeof(WorkerEvent)) {
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WorkerEvent wev;
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int nread = evbuffer_remove(input, &wev, sizeof(wev));
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if(nread == -1) {
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TLOG(FATAL, this) << "evbuffer_remove() failed";
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continue;
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}
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if(nread != sizeof(wev)) {
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TLOG(FATAL, this) << "evbuffer_remove() removed fewer bytes. Expected:"
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<< sizeof(wev) << " Actual:" << nread;
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continue;
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}
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if(wev.type == REOPEN_LOG) {
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if(LOG_ENABLED(INFO)) {
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LOG(INFO) << "Reopening log files: worker_info("
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<< worker_config << ")";
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}
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reopen_log_files();
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continue;
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}
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if(wev.type == GRACEFUL_SHUTDOWN) {
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if(LOG_ENABLED(INFO)) {
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LOG(INFO) << "Graceful shutdown commencing";
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}
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worker_config->graceful_shutdown = true;
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if(worker_stat_->num_connections == 0) {
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event_base_loopbreak(evbase_);
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break;
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}
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continue;
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}
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if(LOG_ENABLED(INFO)) {
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TLOG(INFO, this) << "WorkerEvent: client_fd=" << wev.client_fd
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<< ", addrlen=" << wev.client_addrlen;
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}
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if(worker_stat_->num_connections >=
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get_config()->worker_frontend_connections) {
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if(LOG_ENABLED(INFO)) {
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TLOG(INFO, this) << "Too many connections >= "
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<< get_config()->worker_frontend_connections;
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}
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close(wev.client_fd);
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continue;
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}
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auto evbase = bufferevent_get_base(bev);
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auto client_handler = ssl::accept_connection(evbase, rate_limit_group_,
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ssl_ctx_,
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wev.client_fd,
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&wev.client_addr.sa,
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wev.client_addrlen,
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worker_stat_.get(),
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&dconn_pool_);
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if(client_handler) {
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client_handler->set_http2_session(http2session_);
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client_handler->set_http1_connect_blocker(http1_connect_blocker_);
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if(LOG_ENABLED(INFO)) {
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TLOG(INFO, this) << "CLIENT_HANDLER:" << client_handler << " created";
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}
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} else {
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if(LOG_ENABLED(INFO)) {
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TLOG(ERROR, this) << "ClientHandler creation failed";
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}
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close(wev.client_fd);
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}
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}
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}
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} // namespace shrpx
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